Drying-machine.



-PA'JEINTIBD DEC. 24, 1907. P. G. SARGENT.

DRYING MACHINE.

APPLICATION FILED SEPT. 20, 1906.

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WITNESSES A No. 874,901. PATENTED DEG. 24, 1907. F. G. SARGENT.

DRYING MACHINE.

APPLIGATION HLBD SEPT. zo. 190s.

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DRYING MACHINE.v APPLIGATION FILED snm'. zo, 190s.

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No. 874,901. PATENTED DEC. 24, 1907.

P. G. SARGENT.

- DRYING MACHINE.

APPLICATION FILED SEPT. 20, 1906.

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FREDERICK G. SARGENT, OF GRANITEVI SARGENTS SONS CORPORATION, PORATION OF MASSACHUSETTS. i

DRYING-MACHINE.

To all whom 'it may concern:

Be it known that I, FREDERICK G. SAR- GENT, a citizen of the United States, residing at Granitevlle, in the county of Middlesex,

State of Massachusetts, have invented a certain new and useful Improvement in Drying- Machines, of which the following is a specilication, reference being had therein to the accompanying drawings.

The invention relates to drying machines forhandling wool and other'loose material,

and consists in a drier having two or more i a rens, each of which carries stock through .z t e machine, so that the stock can be fed into the machine in two or more places. Also, in

l' ing carried by an apron through a drier. AAlso, in novel means of withdrawing vthe Q moisture-laden air from the interior of the machine.

L; The invention is illustrated in the drawings, in which latter,-.-Figure 1 shows in side elevationa driercontaining the invention.

Fig..2 isa plan o the said drier. Fig. 3

. passing through the coil-box. Fig. 6 gisfasectlonal detail view showing, more particu'larly, one of the arrangements for open- 1inl up'thestock.

r shown thecasing of the drying-chamber, at 'B the outlet duct`for damp air, and at C is a Vdamperin the said duct for regulating the amount of damp air that is let-out. AtD is thegcasing of the steam-coils, otherwise termed coil-box, at E, E, are the steam- 40 gcoils, at 'F is the fan for causing the. circulation of air within the drier, at F the fan-shaft, and at G the pulley Aon said fan-shaft for the 'reception of a suitable driving-band.

At 1 and 2, respectively, are upper and ported at the opposite ends of the drying-` chamber by rolls 1, 1b, respectively, which are Journaled in bearings supported at the exterior of the end walls of the drying-cham- 450 ber, the said apron passing around the said rolls. Apron l is advanced, so as to carry the stockwhich is supported thereby through the drying-chamber, by means of a driving- LLE, MAss'AcHUsETTs, AssIGNoR To c. G.- oF GRANITEVILLE, MAssAcHUsETTs, A con- Specication of Letters Patent. Application nea septembr 20.1906. serial No. 335.348.

novel means for opening up the stock in bet(laving reference to the drawin rs,-At ais .1s provided with a band-pulley 1r, and roll 2 'cause them to turn in unison. The said rolls lower carrier-aprons, the apron 1 being sup- Patented Dee. 24, 1907.

band 1 passing around a band-pulley 1l connected with the roll 1b. The apron 1 55 passes in and out through openings 1n the end walls of the drying-chamber. Apron 2 is supported in like manner upon rolls 2, 2b, Whchare journaled in bearings outside the Y. opppsite ends of the drying-chamber, the roll 601,: 2b eing driven by means of a band 2 pass-5, ing arounda band-pulley 2l connected with such roll. Apron 2 also passes in and out of., the drying-chamber through openings in 'the end-walls ofthe latter. f i ,765i At 1 is a yeedin -apron at the receivingfg end ofthe apron 1, elivering ont'o the upper run of the said apron, and2 is a feeding, 5 apron for the carrier-apronZ,.feedingonto the upper run of the said apron 2. Feedin -apron 1 is mountediiip'on supporting-rolia' 1f, 1g, and feeding-apron 2 is mounted upc' n supporting-rolls 2f, 28.?Upon roll 1.8;.; is," mounted a pulley 1h, and u on roll- 'r28is mounted a pulley 2, the sai pulleys'jlbeing "751 connected by means of aV driving.-barfdal1v i` passing around thesame. Uponthe roll 2g." isalso mounted a pulley 2k, while upon the; roll 1a is mounted a pulle 1k;- A` driving?" band 1m connects the pu leys `113 2l?, andf`8'0 serves for transmission of rotaryV motion tol the roll 2g, whereby the feed-apron 2 is actu-- ated. By means of the band 1i the roll 1? `is actuated from the roll 2fr and-thereby the feeding-apron 1 is driven. i At 1, `igs.' 1, 2 and 3, is a delivery-apron for the carrier-apron 1, and at 2 is a deliveryapron for the carrier-apron 2. Apron 1 is supported upon the rolls 1p and 1, andy apron .2 is supported upon rollsf2p and 2. i Roll 1q is provided with a band-pulley 2r, a band 1sv passing around the said pulleys 1f, 2f, so as to connect the. rolls 1, 2, in a manner to' 1, 2, are actuated by means of a pulley 1t which is connected with the roll 1b and a band' 1 passing around the said pulley and a pulley 1W which is connected with the roll 1.

The fan F draws the air. from. the interior .100 of the casing A b elow the lower run of the apron 2, through an openin F2 in the adjacent side-wall of the casing The air thus drawn by the fan is forced by the latter up-` ward through the coil-box, and the heated y air renters the drying-chamber through y tice, I may employ more than two, 1n connection with one ofl each of the carrier-aprons.

- the machine to carrier-apron l,

upper and lower openings L, lm, in the former of which is located above the upper run of the while the latter thereof is located at a height intermediate the ripper and lower runs of the said carrier-apron.

At His a shaft extending across the dryingchamber above the upper run of the carrierapron 1 and iournaled in bearings in or upon the opposite side-walls of the casingA. To this shaft are attached a series of fingers i., i, i.

J is a fixed arm on shaft H, and K isa weight carried by the said arm and adjustable thereon toward and from the axis of the shaft as shown in Fig. 8. K is a clampingscrew by which the weight may be secured in adjusted position. The weight K acts with a vtendency to turn the shaft H so as to hold the iingers i, fi, i, pressed toward the upper run of the carrier-apron 1. These fingers i, i, i, incline in the direction of movement of the said upper run, and they act to open up the stock as it is carried past them by the movement of the carrier-apron. In case the stock accumulates or masses up adj acent'the fingers i, i, i, it will press the said fingers up against the resistance of weight K, t 1e said weight lifting and permitting the accumulation to travel onward. I have shown in Fig. 3 two series of the swinging-fingers i, i, i, in connection with carrier-apron 1. In practwo series, or one, or

' By sliding the weight K on the arm J the degree of the pressure of the fingers i, i, i., upon the stock upon the carrier apron may be varied. A fixed stop J coacting with arm J prevents the fingers i, i., i, from resting on the carrier-apron.

For the purpose of withdrawing moistureladen air from the interior of the machine and discharging .it from the machine, when required, the outlet-duct or box B is furnished with a spout 80 leading therefrom. A slide-damper 79 is provided in connection with the outlet-duct or box above the opening through which the said spout communic ates with the interior of the outlet-duct or box. See more particularly Fig. 5. A fan 7S is provided in connection with the said spout, the shaft of said fan being designated 781, and a driving-pulley on said shaft being designated 7 When it is desired to operate the fan 7 8 for the purpose of withdrawing the air from the interior of the machine and expelling the same through spout 80, the damper 79 is moved into its closed position, damper C being opened more or less completely to regulate the outflow. At other times fan 78 is at rest and damper 79 open, the escape of air being regulated by means of damper C. Fan 7 S and damper 79 enable a continu ous i low of fresh air into and through be maintained, when such flow is desired. As will be obvious, damper 79V may be utilized to control the escape of air from outlet-duct or box B when fan 78 is at rest, in the place of damper C.

What I claim is p 1. In a drier, in combination, the dryingchamber,a carrier-apron which carries the stock through Ythe said chamber, and the swinging-fingers i, i, i, arranged to yield under pressure and .operating'to open up the said stock in its travel.

2. In a drier, the combination with the drying-chamber, and the carrier-apron which carries stock through the said chamber, of a series of swinging-fingers '11, i, i, a shaft carrying the said fingers, and an adjustable pressure-device connected with the said shaft.

3. In a drier, the combination with the casing having a drying-chamber, and an olitlet-duct-or box for the escape of air from said let-duct or box for withdrawing air from the chamber and discharging the same from the chamber, of a fan in connection with said outmachine, and a damper for closing the outlet-duct -or box beyond its communication' with the said fan.

4. In a drier, the combination with the casing having duct or box for the escape of air from said chamber, and a dam er for regulating the rate of such esca e, o a fan in communication with said out et-duct or box beyond said damper, for withdrawing air from the chamber and discharging the same from the machine, and a damper for closing the outletduct or box beyond its.communication with the said fan during the operation of the latter.

5. In a drier, the combination. with the casing having a drying chamber, air-heating means, a fan for pro ucing a circulation of air within the machine, and an outlet-duct or box for the escapefof air from the said chamber, of a fan in communication with said outlet-duct or box for withdrawing air from the chamber and discharging the same from the machine, and a damper in connection with the outlet-duct or box beyond its communication with the said fan.

6. In a drier, the combination with the' casing havingv a drying chamber, and heating means, a fan for producing a circulation of air within the machine, an outlet-duct or box for the escape of air from said chamber, and a damper for regulating the rate of such escape, of a fan in communication with said outlet-duct or box for withdrawing air from the chamber and discharging the same 'from the machine, and a damper for closing the outlet-duct or box beyond its communication with the said fan during the operation of the latter.

In testimony whereof I affix my signature in presence of two witnesses.

FREDERICK'G. SARGENT. Witnesses:

CHAs. G. SARGENT, HARRIET' CRAVEN SARGENT. 

